King County, WA Mobility & Curb Rules: E-Bike Classes (2026)

A person may operate a micromobility device as defined in section 7.01.010.BB and a Class 1 or Class 2 electric-assisted bicycle only on regional trails and paved pathways within park areas unless prohibited by state or federal law. The director shall post those regional trails and paved pathways where these uses are prohibited. A person shall not operate a Class 3 electric-assisted bicycle on any trails or pathways within park areas.

D. The director may adopt rules as authorized under K.C.C. 7.12.020.B. to permit the use of motor vehicles or micromobility devices on trails and pathways under specified conditions.

E. The director may further restrict permitted uses on individual trails and pathways and shall post such additional restrictions at park entrances or trailheads or, in some cases, on individual trails.

F. A person who uses or travels in any manner on a trail, shall follow the following trail user code of conduct, which is:

1. Travel at a speed of fifteen miles per hour or less on regional and backcountry trails unless otherwise posted, except trails in park areas dedicated exclusively as mountain bike areas. However, a person shall not travel at a speed greater than is reasonable and prudent under the conditions with regard to the actual and potential hazards then existing;